Plz help, i don't know how to get the direction in this question...?

Magnetic tape is being spooled from a supply reel to take-up reel. The tape is moving with a speed of 0.91 m/s, and the radius of the take-up reel is 0.0762 m. What is the magnitude and direction of the centripetal acceleration of the tape as it is wound on the outer layer of the take-up reel?
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